Article
Optics
Gaojian Liu, Kaixuan Ye, Okky Daulay, Qinggui Tan, Hongxi Yu, David Marpaung
Summary: In this study, an integrated microwave photonic circuit capable of reconfigurable notch filtering and phase shifting functions in the radio frequency range is demonstrated. The circuit achieves high extinction notch filtering and continuously tunable phase shifting over specific frequency ranges. Furthermore, a linearization technique is implemented to improve the dynamic range of the circuit.
Article
Multidisciplinary Sciences
Okky Daulay, Gaojian Liu, Kaixuan Ye, Roel Botter, Yvan Klaver, Qinggui Tan, Hongxi Yu, Marcel Hoekman, Edwin Klein, Chris Roeloffzen, Yang Liu, David Marpaung
Summary: The authors demonstrate programmable integrated microwave photonic filters with low noise figure and ultrahigh dynamic range, using a combination of modulation transformer and double injection ring resonator in a single photonic chip.
NATURE COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Arieh Grosman, Tal Duanis-Assaf, Noa Mazurski, Roy Zektzer, Christian Frydendahl, Liron Stern, Meital Reches, Uriel Levy
Summary: This paper reports a chip-scale photonic sensor for detecting SARS-CoV-2 in clinical samples. The sensor consists of a silicon-nitride double microring resonator, with one ring activated with DNA primers for SARS-CoV-2 RNA and the other serving as a reference. The sensor demonstrates the ability to detect RNA fragments at a concentration of 10 cp/μL with a sensitivity of 750 nm/RIU. This device shows promise as a label-free, small form factor, CMOS compatible biosensor for SARS-CoV-2, as well as other viruses and pathogens.
Review
Physics, Applied
Yuchen Wang, Klaus D. Joens, Zhipei Sun
Summary: Driven by the rapid advancement of photonic integrated circuits, chip-based scalable and versatile quantum light sources with nonlinear optics are becoming increasingly tangible for real-world applications. Future prospects in hybrid integration, novel waveguide structures, and on-chip multiplexing are highlighted for further development in this field.
APPLIED PHYSICS REVIEWS
(2021)
Article
Optics
T. Brydges, A. S. Raja, A. Gelmini, G. Lihachev, A. Petitjean, A. Siddharth, H. Tian, R. N. Wang, S. A. Bhave, H. Zbinden, T. J. Kippenberg, R. Thew
Summary: This work demonstrates the capabilities of an entangled photon-pair source at telecom wavelengths, based on a photonic integrated Si3N4 microresonator with monolithically integrated piezoelectric frequency tuning. The use of thermal control for frequency tuning of photon pairs generated by microresonators has limitations in actuation bandwidth and compatibility with cryogenic environments. The study shows the frequency-tunable photon-pair generation capabilities of a Si3N4 microresonator with a monolithically integrated aluminium nitride layer, with orders of magnitude larger locking bandwidth than previous methods using thermal locking.
Article
Engineering, Electrical & Electronic
Linpeng Gu, Qingchen Yuan, Qiang Zhao, Yafei Ji, Ziyu Liu, Liang Fang, Xuetao Gan, Jianlin Zhao
Summary: This study proposes and fabricates a topologically protected ring-resonator formed in valley photonic crystals on a silicon slab, demonstrating its unidirectional transmission and robustness against structure defects. Coupled with topological waveguides, the topological ring functions as notch and channel-drop filters, opening up a new avenue for developing advanced chip-integrated photonic circuits with attributes of topological photonics.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Optics
Long Zhang, Ming Zhang, Tangnan Chen, Dajian Liu, Shihan Hong, Daoxin Dai
Summary: A compact spectrometer on silicon with ultrahigh resolution and wide working window has been proposed and demonstrated. The on-chip spectrometer has a small footprint, is realized with simple processes, and achieves ultrahigh resolution and a large dynamic range. This high-performance on-chip spectrometer has great potential in applications such as gas sensing, food monitoring, and health analysis.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Multidisciplinary Sciences
Francesco Morichetti, Maziyar Milanizadeh, Matteo Petrini, Francesco Zanetto, Giorgio Ferrari, Douglas Oliveira de Aguiar, Emanuele Guglielmi, Marco Sampietro, Andrea Melloni
Summary: A fully-reconfigurable add-drop silicon photonic filter has been developed, allowing for tuning well beyond the extended C-band range in a complete hitless and polarization transparent manner. This achievement marks an important breakthrough in the potential exploration of integrated photonics in optical communication networks.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
Jiahui Wang, Jason F. Herrmann, Jeremy D. Witmer, Amir H. Safavi-Naeini, Shanhui Fan
Summary: The study introduces a modal circulator that achieves amplitude nonreciprocity through circulation motion among three modes while preserving spatial symmetry. This design simplifies the implementation of dynamically modulated nonreciprocal devices and represents the minimum configuration for achieving complete amplitude nonreciprocity.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Zhetao Jia, Wayesh Qarony, Jagang Park, Sean Hooten, Difan Wen, Yertay Zhiyenbayev, Matteo Secli, Walid Redjem, Scott Dhuey, Adam Schwartzberg, Eli Yablonovitch, Boubacar Kante
Summary: Inverse design is a powerful tool in wave physics for compact, high-performance devices. This study proposes an inverse design method with interpretable results to enhance the efficiency of on-chip photon generation rate through controlling the effective phase-matching conditions. A compact, inverse-designed device is fabricated and characterized, resulting in a high photon pair generation rate with a coincidence to accidental ratio. The design method takes into account fabrication constraints and can be applied to scalable quantum light sources in large-scale communication and computing applications.
Article
Optics
Dong Uk Kim, Young Jae Park, Do Yun Kim, Youngjae Jeong, Min Gi Lim, Myung Seok Hong, Man Jae Her, Yoonhyuk Rah, Dong Ju Choi, Sangyoon Han, Kyoungsik Yu
Summary: This study demonstrates the array-level demonstration of tunable couplers and phase shifters for optoelectronic signal processing using capacitive electrostatic microelectromechanical actuators. The system offers low power consumption and efficient methods for phase and amplitude modulation while maintaining high performance.
Review
Optics
N. L. Kazanskiy, M. A. Butt, S. N. Khonina
Summary: Customizing dispersion and nonlinear properties of photonics devices can be achieved by using periodic segmented waveguide structures at the subwavelength level of the operational wavelength, without changing the material composition. Engineering optical medium as a uniform medium with effective refractive index is possible through this method, and significant progress has been made in devices based on subwavelength grating (SWG) waveguides for signal processing and sensing applications.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Wenkai Zhang, Wentao Gu, Junwei Cheng, Dongmei Huang, Zihao Cheng, Ping-kong Alexander Wai, Hailong Zhou, Jianji Dong, Xinliang Zhang
Summary: We propose a novel method for performing photonic nonlinear computations using linear operations in a high-dimensional space, achieving more diverse nonlinear functions compared to existing optical methods. By programming the high-dimensional photonic matrix multiplier, we demonstrate fourteen different logic operations and showcase the combined logic functions of a half-adder and a comparator at 10 Gbit/s. This scheme simplifies devices and nonlinear operations for programmable logic computing, providing a new solution for optical digital computing and enriching the diversity of photonic nonlinear computing.
Article
Engineering, Electrical & Electronic
Mohammad Houssein Jokar, Alieh Naraghi, Mahmood Seifouri, Saeed Olyaee
Summary: A new design of a bio-sensor using silicon photonic crystal double-elliptical ring resonators is proposed, which has improved sensitivity and capability for cancer detection. Numerical results show that the design achieves high sensitivities of 1170 nm/RIU and 1116.66 nm/RIU, as well as improved quality factors (Q) of 422.36 and 449.16 for skin (Basal) and cervical (HeLa) cancer cells, respectively. Additionally, the design demonstrates a low detection limit value of 3.2 x 10(-3) RIU. The proposed bio-sensor, with its attractive and simple topology, along with its high sensitivity, is a suitable choice for bio-sensing applications.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Optics
Dong-Yang Li, Han Zhang, Zhi Li, Ling-Wei Zhou, Meng-Da Zhang, Xiao-Yun Pu, Yu-Ze Sun, Hang Liu, Yuan-Xian Zhang
Summary: We present a chip-scale integrated pH sensor using an optofluidic ring resonator (OFRR) laser, which exhibits high sensitivity and linearity in the pH range 6.51-8.13. The pumping scheme provides uniform excitation to the gain medium, resulting in a low lasing threshold and highly sensitive sensing. This sensing platform has excellent robustness and low sample consumption, making it suitable for label-free, real-time, and in situ detection in medicine and hazardous/toxic/volatile sensing applications.
Article
Optics
Massimo Borghi, Davide Bazzanella, Mattia Mancinelli, Lorenzo Pavesi
Summary: The traditional Newton's law of cooling may be inadequate in describing the thermal evolution of integrated silicon resonators, but a new equation introduced in this study can fix the inaccuracies. The research discusses the limitations and range of validity of the refined model, while identifying cases where Newton's law still provides accurate solutions. The modeling is valuable for understanding thermal and free carrier instabilities, and for engineering photonic systems relying on resonator dynamical states.
Article
Multidisciplinary Sciences
Massimo Borghi, Stefano Biasi, Lorenzo Pavesi
Summary: Photonics-based reservoir computing shows promising performance in hard tasks, but scaling the system faces challenges. Silicon photonics could be the key technology to overcome these challenges. A novel all-optical RC scheme based on silicon microring and time multiplexing has been proposed and validated, demonstrating a reservoir with 50 virtual nodes and solving nontrivial tasks successfully.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Massimo Borghi, Lorenzo Pavesi
Summary: The researchers added additional spectral tunability to the source by tapering the waveguide width and controlling the delay between pump pulses, while inheriting all the distinctive metrics of the IFWM scheme. This feature allows for the recovery of spectral indistinguishability in the presence of fabrication errors.
Article
Engineering, Electrical & Electronic
Davide Bazzanella, Mattia Mancinelli, Massimo Borghi, Paolo Bettotti, Lorenzo Pavesi
Summary: PRECISE is a Matlab-based library for modeling large and complex photonic integrated circuits. It uses steady-state approximation to handle steady-state effects in circuits, can handle large and complex circuits on desktop PCs, and has a highly modular and easily extensible design.
IEEE PHOTONICS JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Giole Piccoli, Matteo Sanna, Massimo Borghi, Lorenzo Pavesi, Mher Ghulinyan
Summary: Researchers have proposed a low-loss material platform based on silicon oxynitride (SiON), which exhibits significant linear and nonlinear optical characteristics in the infrared and near-infrared wavelength range. The platform demonstrates low propagation loss at visible wavelengths, enabling the realization of long and complex photon manipulation circuits and high-quality factor resonators. Additionally, the proposed SiON exhibits a high nonlinear refractive index, enhancing the efficiency of on-chip photon generation schemes.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Physics, Applied
Massimo Borghi, Federico Andrea Sabattoli, Houssein El Dirani, Laurene Youssef, Camille Petit-Etienne, Erwine Pargon, J. E. Sipe, Amideddin Mataji-Kojouri, Marco Liscidini, Corrado Sciancalepore, Matteo Galli, Daniele Bajoni
Summary: This research reports on the phenomenon of super spontaneous four-wave mixing in a composite optical system, which is analogous to the generation of photon pairs in an integrated photonic device. The researchers provide experimental evidence by studying an array of microring resonators on a silicon photonic chip, showing that the cooperative pair-generation rate always exceeds the incoherent sum of the rates of the individual resonators.
PHYSICAL REVIEW APPLIED
(2022)
Article
Multidisciplinary Sciences
Marco Clementi, Federico Andrea Sabattoli, Massimo Borghi, Linda Gianini, Noemi Tagliavacche, Houssein El Dirani, Laurene Youssef, Nicola Bergamasco, Camille Petit-Etienne, Erwine Pargon, J. E. Sipe, Marco Liscidini, Corrado Sciancalepore, Matteo Galli, Daniele Bajoni
Summary: Frequency-bin qubits are generated on-chip by controlling the interference of biphoton amplitudes in multiple ring resonators, enabling long-range transmission over optical links. The chip can be programmed to generate computational basis states and Bell states with high brightness, fidelity, and purity.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
M. Baldo, O. Melnic, M. Scudieri, G. Nicotra, M. Borghi, E. Petroni, A. Motta, P. Zuliani, L. Laurin, A. Redaelli, D. Ielmini
Summary: Germanium-rich alloys of Ge2Sb2Te5 have been developed to improve the reliability and performance of embedded phase change memory (PCM). Fast program operation, integration in the back end of the line (BEOL), and stability under high-temperature profiles make PCM with Ge-rich GST one of the prominent technologies for the embedded memory market.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Physics, Applied
Massimo Borghi, Noemi Tagliavacche, Federico Andrea Sabattoli, Houssein El Dirani, Laurene Youssef, Camille Petit-Etienne, Erwine Pargon, J. E. Sipe, Marco Liscidini, Corrado Sciancalepore, Matteo Galli, Daniele Bajoni
Summary: Quantum optical microcombs in integrated ring resonators can generate entangled photon pairs over many spectral modes and allow the preparation of high-dimensional qudit states. We present a programmable silicon photonics device that can reconfigure the bin spacing, qudit dimension, and bipartite quantum state on chip. By individually addressing each spectral mode, we achieve states that cannot be generated on chip using a single resonator.
PHYSICAL REVIEW APPLIED
(2023)
Proceedings Paper
Engineering, Multidisciplinary
L. Cattaneo, M. Baldo, N. Lepri, F. Sancandi, M. Borghi, E. Petroni, A. Serafini, R. Annunziata, A. Redaelli, D. Ielmini
Summary: In the era of the internet of things (IoT), hardware physical unclonable functions (PUFs) are crucial for system on chip (SoC) authentication. Identifying physical entropy sources is essential for developing low-cost, low-power, reliable PUFs. This work introduces MVPUF, a new PUF circuit based on embedded PCM, which utilizes the random virgin state of the PCM and a novel selection technique for challenge-response pairs (CRPs), demonstrating improved reliability compared to PUFs based on resistive switching memory (RRAM).
2023 IEEE INTERNATIONAL RELIABILITY PHYSICS SYMPOSIUM, IRPS
(2023)
Proceedings Paper
Engineering, Multidisciplinary
L. Laurin, M. Baldo, E. Petroni, G. Samanni, L. Turconi, A. Motta, M. Borghi, A. Serafini, D. Codegoni, M. Scuderi, S. Ran, A. Claverie, D. Ielmini, R. Annunziata, A. Redaelli
Summary: This work presents a comprehensive study on the retention of set and reset states in Ge-rich Phase Change Memory by coupling electrical and physical characterizations. The presence of amorphous residuals inside the active region of PCM devices is demonstrated for the first time through High Resolution Scanning Transmission Electron Microscopy. The role of such formations was studied using electrical characterization and supported by modeling analysis. The retention physics has been analytically modeled with the same framework for both low and high state resistive behavior.
2023 IEEE INTERNATIONAL RELIABILITY PHYSICS SYMPOSIUM, IRPS
(2023)
Proceedings Paper
Engineering, Electrical & Electronic
Stefano Signorini, Massimo Borghi, Lorenzo Pavesi, Stefano Paesani, Alexandre Mainos, Anthony Laing
Summary: The study successfully demonstrated the first source of heralded single photons meeting the requirements for quantum computing by using pump-delayed intermodal spontaneous four wave mixing on a silicon chip.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Imad I. Faruque, Ben Burridge, Massimo Borghi, Jorge Barreto, John Rarity
Summary: The study directly measured the joint spectral phase of spontaneously emitted photon-pairs, and introduced a novel tomographic method using quantum interference of bi-photon functions, which could potentially be applied in quantum sensing.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Massimo Borghi, Stefano Biasi, Lorenzo Pavesi
Summary: Reservoir computing replaces the backbone of deep neural networks with the dynamics of a complex physical system, training only the output synapses. An all optical RC scheme based on a silicon on insulator microresonator and time multiplexing has been proposed and experimentally validated. This approach can be scaled up to create large hybrid spatio-temporal reservoirs with increased computational speed and complexity.
2021 IEEE 17TH INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS (GFP 2021)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Massimo Borghi
Summary: Stimulated Emission Tomography (SET) is a technique to map the Joint Spectral Amplitude (JSA) of photon pairs with high signal to noise ratio and low integration times. Retrieving the Joint Spectral Phase (JSP) is challenging and requires advanced interferometric techniques. This research presents a scheme to measure complex JSA using a reconfigurable silicon chip and maps the rich structure of the JSP of a silicon microresonator.
2021 IEEE 17TH INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS (GFP 2021)
(2021)
